90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
// This file was extracted from the TCG Published
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// Trusted Platform Module Library
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// Part 3: Commands
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// Family "2.0"
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// Level 00 Revision 01.16
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// October 30, 2014
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#include "InternalRoutines.h"
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#include "EventSequenceComplete_fp.h"
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//
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//
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// Error Returns Meaning
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//
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// TPM_RC_LOCALITY PCR extension is not allowed at the current locality
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// TPM_RC_MODE input handle is not a valid event sequence object
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//
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TPM_RC
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TPM2_EventSequenceComplete(
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EventSequenceComplete_In *in, // IN: input parameter list
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EventSequenceComplete_Out *out // OUT: output parameter list
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)
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{
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TPM_RC result;
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HASH_OBJECT *hashObject;
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UINT32 i;
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TPM_ALG_ID hashAlg;
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// Input validation
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// get the event sequence object pointer
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hashObject = (HASH_OBJECT *)ObjectGet(in->sequenceHandle);
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// input handle must reference an event sequence object
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if(hashObject->attributes.eventSeq != SET)
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return TPM_RC_MODE + RC_EventSequenceComplete_sequenceHandle;
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// see if a PCR extend is requested in call
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if(in->pcrHandle != TPM_RH_NULL)
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{
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// see if extend of the PCR is allowed at the locality of the command,
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if(!PCRIsExtendAllowed(in->pcrHandle))
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return TPM_RC_LOCALITY;
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// if an extend is going to take place, then check to see if there has
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// been an orderly shutdown. If so, and the selected PCR is one of the
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// state saved PCR, then the orderly state has to change. The orderly state
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// does not change for PCR that are not preserved.
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// NOTE: This doesn't just check for Shutdown(STATE) because the orderly
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// state will have to change if this is a state-saved PCR regardless
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// of the current state. This is because a subsequent Shutdown(STATE) will
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// check to see if there was an orderly shutdown and not do anything if
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// there was. So, this must indicate that a future Shutdown(STATE) has
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// something to do.
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if(gp.orderlyState != SHUTDOWN_NONE && PCRIsStateSaved(in->pcrHandle))
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{
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result = NvIsAvailable();
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if(result != TPM_RC_SUCCESS) return result;
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g_clearOrderly = TRUE;
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}
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}
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// Command Output
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out->results.count = 0;
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for(i = 0; i < HASH_COUNT; i++)
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{
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hashAlg = CryptGetHashAlgByIndex(i);
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// Update last piece of data
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CryptUpdateDigest2B(&hashObject->state.hashState[i], &in->buffer.b);
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// Complete hash
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out->results.digests[out->results.count].hashAlg = hashAlg;
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CryptCompleteHash(&hashObject->state.hashState[i],
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CryptGetHashDigestSize(hashAlg),
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(BYTE *) &out->results.digests[out->results.count].digest);
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// Extend PCR
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if(in->pcrHandle != TPM_RH_NULL)
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PCRExtend(in->pcrHandle, hashAlg,
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CryptGetHashDigestSize(hashAlg),
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(BYTE *) &out->results.digests[out->results.count].digest);
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out->results.count++;
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}
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// Internal Data Update
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// mark sequence object as evict so it will be flushed on the way out
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hashObject->attributes.evict = SET;
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return TPM_RC_SUCCESS;
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}
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